Mixing-machine.



Patented Jan. 12, 1915.

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F BJACOBSON W a: WE; W

THE NORRIS PETERS CO.. PHOTO-L!THO., WASHINGTON, D. :2

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MIXING MACHINE.

APPLICATION FILED DEO. 15, 1913.

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FRANK B. JACOBSON, OF HUMBOLDT, IOWA.

MIXING-MACHINE.

Specification of Letters Patent.

Patented Jan. 12, 1915.

Application filed December 15, 1913. Serial No. 806,859.

To all whom it may concern:

Be it known that I, FRANK B. JAooBsoN, a citizen of the United States, residing at Humboldt, in the county of Humboldt and State of Iowa, have invented certain new and useful Improvements in Mixing-Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in mixing machines and relates more specifically to mixers especially adapted for mixing concrete or the like.

An object of the invention is to provide a device of this character which will be of extremely simple construction and operation and which will be constructed in such manner that the hopper will be near the ground, whereby the ingredients to be mixed may be readily placed in said hopper or removed from the same.

A further object is to provide a portable mixing device of this character in which the mixing blades are supported at such angles upon the depending free ends of curved arms projecting radially from the shaft in the hopper, that said blades will force the material upwardly and toward the center of the hopper while a spreader plate also carried by the shaft serves to force the material outwardly, during rotation of the shaft, thereby thoroughly mixing the ingredients.

A still further object is to generally improve and simplify the construction and operation of devices of this character and increase the efiiciency thereof.

With the above and other objects in view, my invention consists in certain novel constructions, combinations, and arrangements of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawings, in which,

Figure l is a side elevational view of the complete device; Fig. 2 is a top plan view with parts broken away; and Fig. 3 is a vertical sectional view through the hopper and parts carried thereby, on the line 3-3 of Fig. 2.

Referring more specifically to the drawings in which similar reference characters designate corresponding parts throughout the several views, 1 designates the platform upon one end of which is mounted the mixing trough 2 while a suitable engine 3 is mounted upon the other end. The platform 1 is supported upon suitable axles 4 having ground wheels 5 mounted thereon, with a tongue 6 projecting from one of said axles, whereby the device may be readily transported from place to place.

The trough 2 is preferably a low circular body with a flat bottom having an outlet opening 7 which is normally closed by a door 8 being retained in closed position in any well known manner. It will be understood that the trough 2 is stationary and a vertical shaft 9 is rotatably mounted through the bottom thereof and provided with a bevel gear 10 upon its lower end in engagement with and adapted to be driven by a bevel gear 11 on a shaft 12, which in turn carries a pulley 13 having a drive belt 14 engaged therearound, said drive belt being also engaged around the pulley 15 on the shaft 16 of the engine 3, said shaft 16 being also provided with the usual fiy wheel 17 The upwardly bowed blade carrying arms 18 have their inner ends secured to the shaft 9 within the trough 2 and project radially from said shaft and have the mixing blades 19 secured upon their turned depending outer ends at such angles as to cause the blades to force the material within the trough upwardly and inwardly toward the center of the hopper upon rotation of the shaft 9. The curved spreader arm 20 also projects radially from the shaft 9 near the bottom of the trough 2 and serves to force the material outwardly toward the circular vertical wall of the trough upon rotation of the shaft 9, thereby thoroughly mixing the ingredients. It will also be seen that when the door 8 is swung downwardly, the mixed material or concrete will be readily forced to position above the outlet opening 7, by means of the blades 19 and the spreader arm 20.

From the foregoing, it will be readily seen that I have provided a mixing machine of improved and simplified construction and operation and which will be highly efficient and eflective in use. It will further be seen that should any of the parts become worn or broken, they may be readily replaced at a small cost.

While I have shown the preferred embodiment of my invention, it will be understood that minor changes in the details of construction and arrangements of parts may be made within the scope of the appended claim Without departing from the spirit of my invention or sacrificing any of the advantages of the same.

What I claim is An apparatus of the class described comprising a stationary mixing trough provided in its'bottom with a normally closed discharge opening, a shaft centrally mounted for rotation in the bottom of the trough, arched one-piece blade carrying arms carried by the shaft, obliquely disposed blades carried upon the free ends of the arms to force material toward the center of the trough upon rotation of the shaft, and a Copies of this patent may be obtained for curved spreader arm mounted upon the five cents each. by addressing the Commissioner of Patents,

Washington, I). C. 

